U.S. patent number 11,335,765 [Application Number 16/816,272] was granted by the patent office on 2022-05-17 for display panels, display screens, and display terminals.
This patent grant is currently assigned to YUNGU (GU'AN) TECHNOLOGY CO., LTD.. The grantee listed for this patent is Yungu (Gu'an) Technology Co., Ltd.. Invention is credited to Yanan Ji, Junhui Lou, Yanqin Song, Zhengfang Xie.
United States Patent |
11,335,765 |
Xie , et al. |
May 17, 2022 |
Display panels, display screens, and display terminals
Abstract
A display panel, a display screen, and a display terminal are
provided. The display panel includes a substrate and a plurality of
wavy first electrodes disposed on the substrate. The plurality of
first electrodes extend in parallel in the same direction and have
an interval between adjacent first electrodes. In an extending
direction of the first electrode, a width of the first electrode
changes continuously or intermittently, and the interval changes
continuously or intermittently.
Inventors: |
Xie; Zhengfang (Kunshan,
CN), Lou; Junhui (Kunshan, CN), Song;
Yanqin (Kunshan, CN), Ji; Yanan (Kunshan,
CN) |
Applicant: |
Name |
City |
State |
Country |
Type |
Yungu (Gu'an) Technology Co., Ltd. |
Langfang |
N/A |
CN |
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Assignee: |
YUNGU (GU'AN) TECHNOLOGY CO.,
LTD. (Langfang, CN)
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Family
ID: |
1000006308615 |
Appl.
No.: |
16/816,272 |
Filed: |
March 12, 2020 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20200212164 A1 |
Jul 2, 2020 |
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Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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PCT/CN2019/073506 |
Jan 28, 2019 |
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Foreign Application Priority Data
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Aug 6, 2018 [CN] |
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201810887646.4 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L
27/3227 (20130101); H01L 27/3234 (20130101); H01L
27/326 (20130101); H01L 27/3286 (20130101) |
Current International
Class: |
H01L
27/32 (20060101) |
References Cited
[Referenced By]
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Other References
International Search Report dated May 7, 2019 in the corresponding
international application (application No. PCT/CN2019/073506).
cited by applicant .
TW First Office Action with search report dated Nov. 29, 2019 in
the corresponding TW application (application No. 108108328). cited
by applicant .
Notice of Allowance of Chinese Patent Application No.
201810887646.4. cited by applicant .
Office Action of TW Patent Application No. 108108328. cited by
applicant .
Office Action of Chinese Patent Application No. 201810887646.4.
cited by applicant .
Supplementary European Search Report of EP Patent Application No.
19848345.5. cited by applicant .
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Office Action of JP Patent Application No. 2020-547278. cited by
applicant.
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Primary Examiner: Shook; Daniel P
Attorney, Agent or Firm: Kilpatrick Townsend &
Stockton
Parent Case Text
CROSS-REFERENCES TO RELATED APPLICATIONS
This application is a continuation application of International
Application PCT/CN2019/073506, filed on Jan. 28, 2019, which claims
the priority benefit of Chinese Patent Application No.
201810887646.4, titled "DISPLAY PANELS, DISPLAY SCREENS AND DISPLAY
TERMINALS" and filed on Aug. 6, 2018. The entireties of these
applications are incorporated by reference herein for all purposes.
Claims
The invention claimed is:
1. A display panel, comprising: a substrate; and a plurality of
first electrodes disposed on the substrate, the plurality of first
electrodes comprising a first electrode having a wavy shape, the
plurality of first electrodes extending toward a same direction,
and having an interval between two adjacent first electrodes, which
are not contact with each other, of the plurality of the first
electrodes, in an extending direction of the first electrode, a
width of the interval changing continuously, wherein at least a
part of the interval is characterized by a straight edge and a
curved edge.
2. The display panel according to claim 1, wherein both sides of
the first electrode in the extending direction of the first
electrode are wavy, crests of the two sides are disposed at
opposite sides, and troughs of the two sides are disposed at
opposite sides, and the width of the interval is changable, to make
diffraction effects at different positions mutually
counteracted.
3. The display panel according to claim 2, wherein a connecting
portion is disposed at the opposite troughs of the first electrode,
and the connecting portion has a strip shape.
4. The display panel according to claim 2, wherein: the display
panel is a passive-matrix organic light-emitting diode (PMOLED)
display panel; the display panel further comprises a second
electrode stacked with the first electrode, and an extending
direction of the second electrode is perpendicular to the extending
direction of the first electrode.
5. The display panel according to claim 4, wherein the first
electrode is an anode, the second electrode is a cathode, and each
anode is configured to drive a row/column of sub-pixels or a
plurality of rows/columns of sub-pixels.
6. The display panel according to claim 5, wherein: the anode is
configured to drive a row/column of pixels; one pixel comprises at
least three sub-pixels; a width between opposite crests of two
sides of the anode is within 30 micrometers to (A-X) micrometers; a
width between opposite troughs of two sides of the anode is greater
than X and less than the width between the opposite crests, A being
a pixel size, X being a minimum process dimension, and the A being
at least (30+X) micrometers.
7. The display panel according to claim 5, wherein: the anode is
configured to drive a row/column of sub-pixels; a width between
opposite crests of two sides of the anode ranges from X micrometers
to ((A-X)/N) micrometers; a width between opposite troughs of two
sides of the anode is greater than X and less than the width
between the opposite crests, A being a pixel size, X being a
minimum process dimension, and N being equal to the number of
columns/rows of the sub-pixels comprised in each pixel.
8. The display panel according to claim 7, wherein the number of
rows/columns of the sub-pixels driven by one anode is N, the number
of columns/rows of the sub-pixels driven by one cathode is M, and M
is greater than or equal to 3 times of N.
9. The display panel according to claim 5, wherein both sides of
the cathode in an extending direction thereof are wavy, crests of
the two sides are oppositely disposed, and troughs of the two sides
are oppositely disposed; a connecting portion is disposed at the
opposite troughs of the cathode, and the connecting portion has a
strip shape.
10. The display panel according to claim 9, wherein the number of
columns/rows of pixels driven by one cathode is equal to the number
of rows/columns of pixels driven by one anode; a width W3 between
the opposite crests of the two sides of the cathode is (W1-X)
micrometers; a width W4 of the connecting portion of the cathode is
greater than X and less than the width between the opposite crests
of the cathode; wherein W1 is a width between opposite crests of
two sides of the anode, X is a minimum process dimension; or
wherein the number of rows/columns of the sub-pixels driven by one
anode is N, the number of columns/rows of the sub-pixels
corresponding to one cathode is M, and M is greater than or equal
to 3 times of N; the width between the opposite crests of the two
sides of the cathode ranges from X micrometers to ((A-X)/)
micrometers; the width of the connecting portion of the cathode is
greater than X and less than the width between the opposite crests
of the cathode; wherein A is a pixel size and X is a minimum
process dimension.
11. The display panel according to claim 1, wherein the first
electrode is provided with a plurality of protrusions distributed
along an edge of the first electrode.
12. A display screen having at least one display area, the at least
one display area comprising a first display area, and a
photosensitive device disposed under the first display area;
wherein the display panel according to claim 1 is disposed in the
first display area, and each display area is configured to display
a dynamic or static picture.
13. The display panel according to claim 1, wherein the display
panel is an active-matrix organic light-emitting diode (AMOLED)
display panel, and the substrate is a thin film transistor (TFT)
array substrate; the first electrode comprises various conductive
traces on the TFT array substrate.
14. A display panel, comprising: a substrate; and a plurality of
first electrodes disposed on the substrate, the plurality of first
electrodes including three selected first electrodes, at least two
of the three selected first electrodes respectively being a wavy
shape, the three selected first electrodes having two intervals
respectively between every two adjacent ones of the three selected
first electrodes, the three selected first electrodes and the two
intervals extending towards a same direction, widths of the two
intervals respectively changing continuously, and the two intervals
are substantially symmetrical with respect to an imaginary middle
line of a middle one of the three selected first electrodes, the
imaginary middle line and the two intervals extending along the
same direction, the display panel is an active-matrix organic
light-emitting diode (AMOLED) display panel, and the substrate is a
thin film transistor (TFT) array substrate.
15. The display panel according to claim 14, wherein a width of the
selected first electrode changing continuously or intermittently,
both sides of the selected first electrode in the extending
direction of the first electrode are wavy, crests of the two sides
are oppositely disposed, and troughs of the two sides are
oppositely disposed.
16. The display panel according to claim 14, wherein the first
electrode comprises various conductive traces on the TFT array
substrate.
17. The display panel according to claim 16, the conductive trace
comprises at least one of a scanning line, a data line, and a power
line.
18. The display panel according to claim 14, wherein the widths of
two intervals respectively changing to make diffraction effects at
different positions mutually counteracted.
19. A display panel, comprising: a substrate; and a plurality of
first electrodes disposed on the substrate, the plurality of first
electrodes being wavy shape, the plurality of first electrodes
comprising a first electrode, wherein the display panel is an
active-matrix organic light-emitting diode (AMOLED) display panel,
and the substrate is a thin film transistor (TFT) array substrate;
the first electrode comprises various conductive traces on the TFT
array substrate, the conductive traces are made of conductive
material; wherein a width of an interval between two adjacent
conductive traces changing continuously.
20. A display screen having at least one display area, the at least
one display area comprising a first display area, and a
photosensitive device disposed under the first display area;
wherein the display panel according to claim 19 is disposed under
the plurality of first electrodes in the first display area, and
each display area is configured to display a dynamic or static
picture.
21. The display panel according to claim 19, wherein a radian of
the conductive trace changing continuously, the conductive traces
are made of transparent conductive material, the width of the
interval between two adjacent conductive traces changing
continuously to make diffraction effects at different positions
mutually counteracted.
Description
TECHNICAL FIELD
The present disclosure relates to the field of display
technologies.
BACKGROUND
With the rapid development of electronic devices, the requirements
of users on screen-to-body ratios become increasingly higher, so
that the full-screen display of the electronic devices receives
more and more attention in the industry. Conventional electronic
devices, such as mobile phones, tablet PC, and the like, require to
integrate components such as a front-facing camera, an earphone, an
infrared sensing element, and the like, so that the full-screen
display of the electronic device can be achieved by notching on the
display screen and providing a transparent display screen in the
notched area. However, when a photosensitive device such as a
camera is disposed under the display panel, a photographed image
often appears to be highly blurred.
SUMMARY
According to various embodiments of the present disclosure, a
display panel, a display screen, and a display terminal are
provided.
A display panel includes a substrate and a plurality of wavy first
electrodes disposed on the substrate. The plurality of first
electrodes extend in parallel in the same direction and have an
interval between adjacent first electrodes. In an extending
direction of the first electrode, a width of the first electrode
changes continuously or intermittently, and the interval changes
continuously or intermittently.
Optionally, both sides of the first electrode in the extending
direction are wavy. Crests of the two sides are oppositely
disposed, and troughs of the two sides are oppositely disposed.
Optionally, a connecting portion is disposed at the opposite
troughs of the first electrode, and the connecting portion has a
strip shape.
Optionally, the display panel is a passive-matrix organic
light-emitting diode (PMOLED) display panel. The display panel
further includes a second electrode stacked with the first
electrode, and an extending direction of the second electrode is
perpendicular to the extending direction of the first
electrode.
Optionally, the first electrode is an anode, the second electrode
is a cathode. Each anode is configured to drive a row/column of
sub-pixels or a plurality of rows/columns of sub-pixels.
Optionally, each anode is configured to drive a row/column of
pixels. One pixel includes at least three sub-pixels. A width
between opposite crests of two sides of the anode is within 30
micrometers to (A-X) micrometers. A width between opposite troughs
of two sides of the anode is greater than X and less than the width
between the opposite crests. A is a pixel size, X is a minimum
process dimension, and the A is greater than or equal to (30+X)
micrometers.
Optionally, each anode is configured to drive a row/column of
sub-pixels. A width between opposite crests of two sides of the
anode ranges from X micrometers to ((A-X)/N) micrometers. A width
between opposite troughs of two sides of the anode is greater than
X and less than the width between the opposite crests. A is a pixel
size. X is a minimum process dimension. N is equal to the number of
columns/rows of the sub-pixels included in each pixel.
Optionally, a shape of the cathode is the same as a shape of the
anode.
Optionally, the number of rows/columns of the sub-pixels driven by
one anode is N, the number of columns/rows of the sub-pixels driven
by one cathode is M, and N is greater than or equal to 3 times of
M.
Optionally, both sides of the cathode in an extending direction
thereof are wavy. Crests of the two sides are oppositely disposed,
and troughs of the two sides are oppositely disposed. A connecting
portion is disposed at the opposite troughs of the cathode. The
connecting portion has a strip shape.
Optionally, the number of columns/rows of pixels driven by one
cathode is equal to the number of rows/columns of pixels driven by
one anode. A width W3 between the opposite crests of the two sides
of the cathode is (W1-X) micrometers. A width W4 of the connecting
portion of the cathode is greater than X and less than the width
between the opposite crests of the cathode. W1 is a width between
opposite crests of two sides of the anode, X is a minimum process
dimension.
Optionally, the number of rows/columns of the sub-pixels driven by
one anode is N, the number of columns/rows of the sub-pixels
corresponding to one cathode is M and N is greater than or equal to
3 times of M. The width between the opposite crests of the two
sides of the cathode ranges from X micrometers to ((A-X)/3)
micrometers. The width of the connecting portion of the cathode is
greater than X and less than the width between the opposite crests
of the cathode. A is a pixel size and X is a minimum process
dimension.
Optionally, X is 4 micrometers.
Optionally, the display panel is an active-matrix organic
light-emitting diode (AMOLED) display panel. The substrate is a
thin film transistor (TFT) array substrate. The first electrode
includes various conductive traces on the TFT array substrate. The
conductive trace includes at least one of a scanning line, a data
line, and a power line.
Optionally, the display panel further includes an anode layer
disposed above the substrate. The anode layer includes an anode
array. The anode has a circular shape, elliptical shape, or
dumbbell shape.
Optionally, the first electrode is provided with a plurality of
protrusions distributed along an edge of the first electrode.
A display screen has at least one display area. The at least one
display area includes a first display area. A photosensitive device
may be disposed under the first display area.
The display panel according to any one of the aforementioned
embodiments is disposed in the first display area. Each display
area in the at least one display area is configured to display a
dynamic or static picture.
Optionally, the at least one display area further includes a second
display area. The display panel disposed in the first display area
is a PMOLED display panel or an AMOLED display panel. The display
panel disposed in the second display area is an AMOLED display
panel.
A display terminal includes a device body having a device area and
the display screen according to any one of the aforementioned
embodiments covering the device body. The device area is located
under the first display area. A photosensitive device configured to
collect light through the first display area is disposed in the
device area.
Optionally, the device area is a notched area. The photosensitive
device includes at least one of a camera and a light sensor.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic view of a conductive trace;
FIG. 2 is a schematic view of a display panel according to an
embodiment;
FIG. 3 is a schematic view of a display panel according to FIG. 2
with different shape of the first electrode;
FIG. 4 is a schematic view of a display panel according to FIG. 2
with different shape of the first electrode;
FIG. 5 is a schematic view of a display panel according to FIG. 2
with different shape of the first electrode;
FIG. 6 is a cross-sectional view of a PMOLED display panel
according to an embodiment;
FIG. 7 is a schematic view of an anode and a cathode in a PMOLED
display panel according to an embodiment;
FIG. 8 is a schematic view of an anode and a cathode in a PMOLED
display panel according to FIG. 7 with different shape of the first
electrode;
FIG. 9 is a schematic view of an anode in an AMOLED display panel
according to an embodiment;
FIG. 10 is a schematic view of an anode in an AMOLED display panel
according to FIG. 9 with different shape of the anode;
FIG. 11 is a schematic view of a display screen according to an
embodiment;
FIG. 12 is a schematic view of a display terminal according to an
embodiment; and
FIG. 13 is a schematic view of a device body according to an
embodiment.
DETAILED DESCRIPTION OF THE INVENTION
Reference will be made to the accompanying drawings and embodiments
to describe the present disclosure in detail, so that the objects,
technical solutions, and advantages of the present disclosure can
be more apparent and understandable. It is understood that the
specific embodiments described herein are merely illustrative of
the present disclosure and are not intended to limit the present
disclosure.
In the description of the present disclosure, it is to be
understood that orientation or position relationships that are
indicated by the terms "center", "transverse", "on", "under",
"left", "right", "vertical", "horizontal", "top", "bottom",
"inside", and "outside", and the like are orientation or position
relationships shown based on the accompany drawings, and are merely
for convenience of the description of the present disclosure and
simplifying description, rather than indicating or implying that
the indicated device or element must have a particular orientation
or being constructed and operated in a particular orientation, and
are therefore not to be construed as limitation of the present
disclosure. In addition, it should be noted that when an element is
referred to as being "formed on another element", it can be
directly connected to the other element or intervening elements may
be present. When an element is referred to as being "connected" to
another element, it can be directly connected to the other element
or intervening elements may be present. In contrast, if an element
is referred to as being "directly on" another element, there are no
intervening elements present.
When a photosensitive device such as a camera or the like is
disposed under a transparent display panel, the photographed photos
are easily to be blurred. This problem is due to the presence of
conductive traces in the display screen body of electronic devices.
External light can cause complex diffraction intensity distribution
when passing through these conductive traces, resulting in
diffraction fringes, which would then affect the normal operation
of the photosensitive device such as a camera or the like. For
example, when the camera located under the transparent display area
is in operation, external light can be obviously diffracted after
passing through the wire traces in the display screen, so that the
picture photographed by the camera is distorted.
FIG. 1 is a schematic view of a conductive trace. Referring to FIG.
1, the conductive trace has a strip shape. Light propagates with
varying degrees of bending and spreading when passing through
obstacles such as slits, small holes, disks, or the like, thereby
deviating from the original straight line, and such phenomenon is
called diffraction. During diffraction, the distribution of
diffraction fringes can be affected by the size of obstacles, such
as the width of the slit, the size of the small hole, and the like.
The diffraction fringes generated at the positions with the same
width are identical in position, and a more significant diffraction
effect appears. When light passes through the conventional display
panel, since the display panel is provided with the strip-shaped
conductive traces which are periodically arranged, the diffraction
fringes generated at different positions have the same position, so
that the obvious diffraction effect can be generated, and the
normal operation of the photosensitive device disposed under the
display panel is not facilitated.
In order to solve the aforementioned problem, an embodiment of the
present disclosure provides a display panel, which can solve the
aforementioned problem quite well. FIG. 2 is a schematic view of a
display panel according to an embodiment. Referring to FIG. 2, the
display panel includes a substrate 110 and a plurality of wavy
first electrodes 120 disposed on the substrate 110. The plurality
of first electrodes 120 extend in parallel in the same direction,
and have an interval between adjacent first electrodes 120. In the
present embodiment, since the first electrode 120 is wavy, the
width thereof changes continuously or intermittently in an
extending direction of the first electrode 120. The continuous
change of the width means that the widths at any two adjacent
positions of the first electrode 120 are different. In FIG. 2, the
extending direction of the first electrode 120 refers to a length
direction thereof, that is, the Y direction in the figure.
The width of the first electrode 120 (that is, the length of the
first electrode 120 in the X direction in the figure) changes
intermittently in the extending direction of the first electrode
120. And the intermittent change of the width means that the widths
of two adjacent positions in a partial area of the first electrode
120 are the same, and the widths of two adjacent positions in a
partial area are different. In the present embodiment, the
plurality of first electrodes 120 are regularly arranged on the
substrate 110, and thus, a gap between two adjacent first
electrodes 120 also exhibits a continuous change or an intermittent
change in a direction parallel to the extending direction of the
first electrodes 120. The width of the first electrode 120 may
change periodically in the extending direction thereof regardless
of whether the width thereof changes continuously or
intermittently, and the length of one change period may correspond
to the width of one pixel.
The aforementioned display panel is provided with the plurality of
wavy first electrodes 120. The width of the first electrode 120
changes continuously or intermittently in the extending direction
thereof, so that adjacent first electrodes 120 have a continuously
changing interval or an intermittently changing interval
therebetween. Therefore, diffraction fringes generated at positions
of different widths of the first electrodes 120 and different
intervals of the adjacent first electrodes 120 are different in
position. Diffraction effects at different positions are mutually
counteracted, so that the diffraction effect can be effectively
reduced, thereby ensuring that when a camera is disposed under the
transparent display panel, the photographed graphics have higher
definition.
Optionally, in order to improve light transmittance of the display
panel, each conductive trace of the display panel is made of a
transparent conductive metal oxide. For example, the first
electrode 120 may be made of transparent conductive metal oxide.
For example, the first electrode 120 may be made of indium tin
oxide (ITO) or indium zinc oxide (IZO). In addition, in order to
reduce the resistance of each conductive trace on the basis of
ensuring high light transmittance, the first electrode 120 may also
be made of materials such as aluminum-doped zinc oxide,
silver-doped ITO, silver-doped IZO or the like.
Optionally, the first electrode 120 has a symmetrical structure in
the extending direction thereof, as shown in FIG. 2. The setting of
the width of the first electrode 120 directly affects the pixel
openings in the display panel, thereby affecting the pixel opening
ratio of the display panel. The first electrode 120 is arranged in
a symmetrical structure, so that each pixel unit on the display
panel can be ensured to have the same or similar opening ratio
without causing the problem that the display effect of the display
panel is affected due to a large difference of the opening ratios
of the pixel units at different positions.
Optionally, both sides of the first electrode 120 in the extending
direction are wavy, as shown in FIG. 2. Crests T of the two sides
in the extending direction are oppositely disposed, and troughs B
of the two sides in the extending direction are oppositely
disposed. In the present embodiment, the two sides are connected by
circular arc-shaped sides with the same radius of curvature.
Optionally, the two sides may also be connected by elliptical sides
with the same radius of curvature, as shown in FIG. 3. By forming
the two sides of the first electrode 120 into a wave shape formed
by connecting circular arcs or ellipses, the diffraction fringes
generated on the first electrode 120 can be ensured to be diffused
in different directions, thereby reducing the diffraction
effect.
Optionally, a connecting portion 122 is disposed at the opposite
troughs of the first electrode 120, as shown in FIG. 4. The
connecting portion 122 has a strip shape. A width W of the
connecting portion 122 should be greater than X micrometers and
less than the maximum width of the first electrode 120. X is a
minimum process dimension, which is 4 micrometers in the present
embodiment, and can be smaller in other embodiments. Optionally, an
area between two adjacent connecting portions 122 on the first
electrode 120 corresponds to one pixel opening, and the connecting
portion 122 corresponds to a gap between two adjacent pixel
openings. By adjusting the width W of the connecting portion 122,
the resistance on the first electrode 120 can be adjusted so that
it can meet the use requirement. Optionally, the connecting portion
122 may also have other irregular structures, such as a shape with
a small middle and two large ends, or a shape with a large middle
and two small ends. In another embodiment, the first electrode 120
is provided with a plurality of protrusions 124, as shown in FIG.
5. Sides of the plurality of protrusions 124 are straight lines
and/or curves. In the present embodiment, the sides of the
plurality of protrusions 124 are all curved. By providing the
plurality of protrusions 124 on the first electrode 120, the
uniformity distribution of the width at each position of the first
electrode 120 can be further disturbed, thereby reducing the
diffraction effect.
Optionally, the aforementioned display panel is a passive-matrix
organic light-emitting diode (PMOLED) display panel. At this time,
the display panel further includes a second electrode 140 stacked
with the first electrode 120, as shown in FIG. 6. An insulating
layer 130 is disposed between the first electrode 120 and the
second electrode 140. The insulating layer 130 is configured to
achieve electrical insulation between the first electrode 120 and
the second electrode 140. The insulating layer is an inorganic
insulating layer or an organic insulating layer, and may also be a
composite structure containing both an organic layer and an
inorganic layer. In order to improve the light transmittance of the
display panel, the insulating layer is preferably made of
SiO.sub.2, SiN.sub.x, Al.sub.2O.sub.3, or the like.
An extending direction of the second electrode 140 is perpendicular
to the extending direction of the first electrode 120, thereby
forming a light emitting area of the display panel in the
overlapping area, as shown in FIG. 7. The first electrode 120 is an
anode and the second electrode 140 is a cathode. Generally, one
pixel (or pixel unit) includes at least three sub-pixels of red,
green, and blue. In the present embodiment, each anode is
configured to drive a row/column of sub-pixels or a plurality of
rows/columns of sub-pixels. Optionally, one pixel unit may also
include four sub-pixels of red, green, blue, and white. The
arrangement of the sub-pixels may be RGB sub-pixels parallel
arrangement, V-shaped arrangement, PenTile arrangement, and the
like. In the present disclosure, pixel units in which RGB
sub-pixels are arranged in parallel are taken as an example for
illustration. The display panel in present embodiment may also be
applied to other arrangements besides the RGB sub-pixels parallel
arrangement.
Optionally, each anode is configured to drive all the sub-pixels in
a row/column of pixel units. That is, in the present embodiment,
each anode is used to drive three columns of sub-pixels of red,
green, and blue in a row/column of pixel units. At this time, the
shape of the anode adopts the shape shown in FIG. 2, that is, two
sides of the anode in the extending direction are both wavy, and
crests T of the two sides are oppositely disposed and troughs B of
the two sides are oppositely disposed. Therefore, there is a
maximum width W1 between the opposite crests T and a minimum width
W2 between the opposite troughs B. The width W1 between the
opposite crests T ranges from 30 micrometers to (A-X) micrometers,
and the width W2 between the opposite troughs B ranges from X
micrometers to W1. A is a pixel size, X is a minimum process
dimension, and the A is greater than (30+X) micrometers. The pixel
size A needs to be determined according to the size of the display
panel and the total number of pixels on the display panel. X is the
minimum process dimension, which is 4 micrometers in the present
embodiment, and can be smaller in other embodiments.
Optionally, the pixels are all square pixels, that is, the pixels
have the same size in both length and width. At this case, the
pixel size A is equal to the square root of the area of the display
panel divided by the total number of pixels. Optionally, the width
between the opposite troughs B may also be less than 4 micrometers,
as long as the manufacturing process capability can achieve and
meet the requirements of electrical characteristics (such as
resistance characteristics) and the like. In another embodiment,
the anodes are regularly arranged on the substrate 110, that is,
the distance between two adjacent anodes is fixed, so that the
interval between the two adjacent anodes also changes with the
width of the anodes. Therefore, the two anodes have a minimum
interval D1 between the opposite crests and a maximum interval D2
between the opposite troughs. The minimum interval D1 is (A-W1).
The maximum interval D2 is (A-W2).
Optionally, a shape of the cathode is the same as a shape of the
anode, and both of which are wavy. At this case, the cathode is the
same as the anode, which is used to drive all the sub-pixels in a
row/column of pixel units, so as to control all the sub-pixels in
the same row/column of pixel units. In the figure, the illustration
is given by taking only the plurality of first electrodes (i.e.
anodes) arranged along the X direction and the plurality of second
electrodes (i.e. cathodes) sequentially arranged along the Y
direction as an example.
Optionally, the cathode is an electrode structure having a
strip-shaped connecting portion at the two opposite troughs, as
shown in FIG. 7. At this case, the cathode also has a maximum width
W3 between the opposite crests of the two sides thereof and a
minimum width W4 between the opposite troughs of the two sides
thereof. Similarly, the two adjacent cathodes has a minimum
interval D3 at the crests and a maximum interval D4 at the troughs.
At this case, W3 is (W1-X) micrometers, and W2 ranges from X
micrometers to W3 micrometers. X is the minimum process dimension,
which is 4 micrometers in the present embodiment and can be smaller
in other embodiments. The dimensions of the anode and cathode may
be set as required, and the above embodiments do not constitute the
only limitations of the present disclosure.
Optionally, the number of columns/rows of pixels correspondingly
driven by each cathode is M, and the number of columns/rows of
pixels correspondingly driven by each anode is N, then M should be
greater than or equal to 3 times of N. Specifically, one pixel unit
is formed by using RBG sub-pixels, and the number of columns/rows M
of the sub-pixels correspondingly driven by the cathode is 3 times
of N. Optionally, if one pixel unit is formed by using RGBW
sub-pixels, the number of columns/rows M of the sub-pixels
correspondingly driven by the cathode is 4N. In other embodiments,
the column pixels may be driven by the cathode and the row pixels
may be driven by the anode, with the only difference being the
arrangement directions of the anode and the cathode.
FIG. 8 is a schematic view of a cathode and an anode in a PMOLED
display panel according to another embodiment. At this case, one
pixel unit includes three sub-pixels of red, green, and blue.
Therefore, each anode 120 is used to drive a column of pixel units
and each cathode 140 is used to drive a row of sub-pixels. The
pattern and dimension of the anode can be referred to FIG. 2, that
is, the width W1 between the opposite crests T ranges from 30
micrometers to (A-X) micrometers, the width W2 between the opposite
troughs B ranges from X micrometers to W1, the minimum interval D1
is (A-W1), and the maximum interval D2 is (A-W2). X is the minimum
process dimension.
Referring to FIG. 8, the width W3 between the opposite crests of
the two sides of the cathode ranges from X micrometers to ((A-X)/3)
micrometers. In other embodiments, when the number of the
sub-pixels in one pixel unit is N, the width W3 between the
opposite crests T of the two sides of the cathode 140 ranges from X
micrometers to ((A-X)/N) micrometers. In the present embodiment,
the width W4 between the opposite troughs of the two sides of the
cathode 140 ranges from X micrometers to W1, the minimum interval
D3 is (A-W3), and the maximum interval D4 is (A-W4). A is the pixel
size and X is the minimum process dimension. In the above
embodiments, the interval between adjacent electrodes is between 4
micrometers and 20 micrometers.
In another embodiment, the anode in FIG. 8 can also be used as a
cathode and the cathode can be used as an anode, that is, each
cathode is used to drive a column of sub-pixels, and each anode is
used to drive all the sub-pixels in a row of pixel units.
In another embodiment, the aforementioned display panel may also be
an active-matrix organic light-emitting diode (AMOLED) display
panel. At this case, the substrate 110 is a thin film transistor
(TFT) array substrate. The first electrode includes various
conductive traces disposed on the TFT array substrate. The width of
the first electrode needs to be designed according to the width
design of the conductive trace. The conductive trace includes at
least one of a scanning line, a data line, and a power line. For
example, all conductive traces such as scanning lines, data lines,
and power lines on the TFT array substrate may be modified to adopt
the shape of the electrode as shown in FIG. 2. The conductive
traces on the TFT array substrate are changed to the wavy shape of
the electrode in FIG. 2, so that diffraction fringes with different
positions can be formed when light passes through positions of
different widths and different gaps of adjacent traces in an
extending direction of the conductive trace. Diffraction effects at
different positions are mutually counteracted, and then the
diffraction effect is weakened, so that a photosensitive device
placed under the TFT array substrate can normally operate.
Optionally, when the display panel is an active-matrix organic
light-emitting diode (AMOLED) display panel, the display panel
further includes an anode layer disposed above the substrate. The
anode layer includes an anode array. The anode array consists of a
plurality of mutually independent anodes. The anode may have a
circular shape, elliptical shape, or dumbbell shape. FIG. 9 is a
schematic view of an anode array formed using circular anodes. FIG.
10 is a schematic view of an anode array formed using dumbbell
anodes. By changing the shape of the anode into the circular shape,
the elliptical shape, or the dumbbell shape, diffraction fringes
with different positions and diffusion directions can also be
generated at positions of different widths of the anode when light
passes through the anode layer, and the diffraction fringes at
different positions and in different directions are mutually
counteracted, so that the diffraction effect is weakened. In
addition, each of the sub-pixels may also be arranged in a
circular, elliptical, or dumbbell shape as shown in FIG. 9 and FIG.
10 to weaken the diffraction effects. Moreover, the area of each of
the sub-pixels can be enlarged to the maximum extent by the
circular shape, the elliptical shape, or the dumbbell shape, and
the light transmittance is further improved.
Optionally, the aforementioned display panel may be a transparent
or transflective display panel. The transparency of the display
panel can be achieved by using various layers of materials with
better light transmittance. For example, each layer is made of a
material having a light transmittance of greater than 90%, so that
the light transmittance of the entire display panel may be greater
than 70%. In addition, each structure film layer is made of a
material having a light transmittance of greater than 95%, so that
the light transmittance of the display panel is further improved,
and even the light transmittance of the entire display panel is
greater than 80%. Specifically, the conductive traces such as the
cathode and the anode may be made of ITO, IZO, Ag+ITO, or Ag+IZO,
etc., the insulating layer is preferably made of SiO.sub.2,
SiN.sub.x, Al.sub.2O.sub.3, etc., and the pixel definition layer
140 is made of a highly transparent material.
The transparency of the display panel can also be achieved by other
technical means, and structures of the aforementioned display
panels can be applicable. The transparent or transflective display
panel can display the picture normally when it is in an operation
state. When the display panel is in other functional demand states,
external light can irradiate the photosensitive device and the like
disposed under the display panel through the display panel.
An embodiment of the present disclosure further provides a display
screen. The display screen has at least one display area. Each
display area is configured to display dynamic or static pictures.
At least one display area includes a first display area. The first
display area is provided with the display panel as mentioned in any
of the foregoing embodiments. A photosensitive device may be
disposed under the first display area. Since the display panel in
the foregoing embodiment is adopted in the first display area, when
light passes through the display area, no obvious diffraction
effect is generated, so that the photosensitive device located
under the first display area can be ensured to operate normally.
The first display area may display dynamic or static pictures
normally when the photosensitive device is not in operation, and
the first display area changes along with the change of the display
content of the whole display screen, such as displaying an external
image being captured when the photosensitive device is in
operation. Alternatively, when the photosensitive device is in
operation, the first display area may also be in a non-display
state, so that the photosensitive device can be further ensured to
normally perform light collection through the display panel.
FIG. 11 is a schematic view of a display screen according to an
embodiment, and the display screen includes a first display area
910 and a second display area 920. A light transmittance of the
first display area 910 is greater than that of the second display
area 920. A photosensitive device 930 may be disposed under the
first display area 910. The first display area 910 is provided with
a display panel as mentioned in any of the foregoing embodiments.
Both the first display area 910 and the second display area 920 are
used to display static or dynamic pictures. Since the display panel
in the foregoing embodiments is adopted in the first display area
910, when light passes through the display area, no obvious
diffraction effect is generated, so that the photosensitive device
930 located under the first display area 910 can be ensured to work
normally. The first display area 910 may display dynamic or static
pictures normally when the photosensitive device 930 is not in
operation, and the first display area 910 may be in a non-display
state when the photosensitive device 930 is in operation, thereby
ensuring that the photosensitive device 930 can perform light
collection normally through the display panel. Optionally, the
light transmittance of the first display area 910 may also be the
same as the light transmittance of the second display area 920, so
that the entire display panel has better light transmittance
uniformity, ensuring a better display effect of the display
panel.
Optionally, the display panel disposed in the first display area
910 is a PMOLED display panel or an AMOLED display panel, and the
display panel disposed in the second display area 920 is an AMOLED
display panel, thereby forming a full screen composed of a PMOLED
display panel and an AMOLED display panel.
Another embodiment of the present disclosure further provides a
display terminal. FIG. 12 is a schematic view of the display
terminal in accordance with an embodiment, and the display terminal
includes a device body 810 and a display screen 820. The display
screen 820 is disposed on the device body 810 and is interconnected
with the device body 810. The display screen 820 may use a display
screen in any of the foregoing embodiments to display a static or
dynamic picture.
FIG. 13 is a schematic view of the device body 810 in accordance
with an embodiment. In the present embodiment, the device body 810
may be provided with a notched area 812 and a non-notched area 814.
Photosensitive devices such as cameras 930, optical sensors, and
the like may be disposed in the notched area 812. At this case, the
display panel in the first display area of the display screen 820
is correspondingly attached to the notched area 814, so that the
aforementioned photosensitive devices such as the camera 930, the
optical sensor, and the like can perform operations such as
external light collection and the like through the first display
area. Since the display panel in the first display area can
effectively improve the diffraction phenomenon generated by the
transmission of the external light through the first display area,
the quality of the image captured by the camera 930 on the display
device can be effectively improved, the distortion of the captured
image caused by diffraction can be avoided, and the accuracy and
the sensitivity of the optical sensor to sense external light can
also be improved.
The aforementioned electronic device may be a digital device such
as a mobile phone, a tablet, a palmtop computer, an ipod, and the
like.
Although the respective embodiments have been described one by one,
it shall be appreciated that the respective embodiments will not be
isolated. Those skilled in the art can apparently appreciate upon
reading the disclosure of the present disclosure that the
respective technical features involved in the respective
embodiments can be combined arbitrarily between the respective
embodiments as long as they have no collision with each other. The
respective technical features mentioned in the same embodiment can
also be combined arbitrarily as long as they have no collision with
each other.
The foregoing descriptions are merely specific embodiments of the
present invention, but are not intended to limit the protection
scope of the present invention. Any variation or replacement
readily figured out by a person skilled in the art within the
technical scope disclosed in the present invention shall all fall
within the protection scope of the present invention. Therefore,
the protection scope of the present invention shall be subject to
the protection scope of the appended claims.
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